分析:(1)先把1.02看作(1+0.02),運(yùn)用乘法分配律計(jì)算;
(2)把被除數(shù)和除數(shù)分別擴(kuò)大100倍再計(jì)算;
(3)運(yùn)用乘法分配律簡(jiǎn)算;
(4)先算乘法,再算加法;
(5)先算除法和乘法,再算加法;
(6)小括號(hào)內(nèi)的結(jié)果為0,中括號(hào)內(nèi)的結(jié)果為2.8,最后算括號(hào)外的;
(7)先算小括號(hào)內(nèi)的,再算中括號(hào)內(nèi)的,最后算括號(hào)外的;
(8)先算小括號(hào)內(nèi)的,再算括號(hào)外的除法,最后算減法.
解答:解:(1)7.02×1.02,
=7.02×(1+0.02),
=7.02+7.02×0.02,
=7.02+0.1404,
=7.1604;
(2)1.125÷0.09,
=112.5÷9,
=12.5;
(3)2001×0.54+2001×0.46,
=2001×(0.54+0.46),
=2001×1,
=2001;
(4)0.64×0.25+0.75,
=0.16+0.75,
=0.91;
(5)[2.8-2.8×(2.8-2.8)]÷0.7,
=[2.8-2.8×0]÷0.7,
=2.8÷0.7,
=4;
(6)0.78÷26+0.5×0.02,
=0.03+0.01,
=0.04;
(7)8×[1÷(3.2-2.95)],
=8×[1÷0.25],
=8×4,
=32;
(8)33.4-26.465÷(2.6+4.1),
=33.4-26.465÷6.7,
=33.4-3.95,
=29.45.
點(diǎn)評(píng):此題考查了運(yùn)算定律與簡(jiǎn)便運(yùn)算,四則混合運(yùn)算,注意運(yùn)算順序和運(yùn)算法則,靈活運(yùn)用所學(xué)的運(yùn)算定律簡(jiǎn)便計(jì)算.